Flash-in-a-box
Pure entry. Everything made in Blender, only procedural textures.
A jack-in-a-box might count as a “jumping jack”. I could have made The Flash pop-out instead of a clown, but then I decided to go with a vintage camera flash apparatus.
So when the box opens, not only are you startled by the movement, but also blinded by the strong flash. Great for taking pictures of your kids making the funniest faces!